Home / 2,977.32-4,109.90-1,916.22

Finding the Fourth Proportional to 2,977.32, 4,109.90 and 1,916.22

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Solution

The fourth proportional to 2,977.32, 4,109.90 and 1,916.22 is: 2,645.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,977.32 : 4,109.90 = 1,916.22 : x
  2. Step 2: Convert to fraction form
    2,977.32/4,109.90 = 1,916.22/x
  3. Step 3: Cross multiply
    2,977.32x = 4,109.90 × 1,916.22
  4. Step 4: Simplify right side
    2,977.32x = 7,875,463.00
  5. Step 5: Solve for x
    x = 7,875,463.00/2,977.32
  6. Step 6: Final answer
    x = 2,645.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.